Dimensions, weight per metre and paint area
686x254x170 UB is a universal beam weighing 170 kg/m: a 12 m length weighs 2,040.0 kg. It is 692.9 mm deep and 255.8 mm wide; the web is 14.5 mm and the flanges 23.7 mm thick.
Also listed as UB686X254X170.
| Depth h | 692.9 mm |
|---|---|
| Flange width b | 255.8 mm |
| Web thickness tw | 14.5 mm |
| Flange thickness tf | 23.7 mm |
| Weight per metre | 170 kg/m |
|---|---|
| Cross-section area | 216.6 cm² |
| Paint area per metre | 2.409 m²/m |
| Paint area per tonne | 14.2 m²/t |
| 1 m | 170 kg |
|---|---|
| 6 m | 1,020.0 kg |
| 12 m | 2,040.0 kg |
Dimensions and mass per BS 4-1, from Steel Optimizer's verified section library. Area is worked out from the mass at 7,850 kg/m³. Paint area counts the outside perimeter with square corners and ignores root radii, so it is on the safe side: typically 2–5 % above catalogue surface areas.
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